ASTM_D_5447_-_17.pdf

Designation:D544717Standard Guide forApplication of a Numerical Groundwater Flow Model to aSite-Specific Problem1This standard is issued under the fixed designation D5447;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of last revision.A number in parentheses indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.1.Scope*1.1 This guide covers the application and subsequent docu-mentation of a groundwater flow model to a particular site orproblem.In this context,“groundwater flow model”refers tothe application of a mathematical model to the solution of asite-specific groundwater flow problem.1.2 This guide illustrates the major steps to take in devel-oping a groundwater flow model that reproduces or simulatesan aquifer system that has been studied in the field.This guidedoes not identify particular computer codes,software,oralgorithms used in the modeling investigation.1.3 This guide is specifically written for saturated,isothermal,groundwater flow models.The concepts are appli-cable to a wide range of models designed to simulate subsur-face processes,such as variably saturated flow,flow in frac-tured media,density-dependent flow,solute transport,andmultiphase transport phenomena;however,the details of theseother processes are not described in this guide.1.4 This guide is not intended to be all inclusive.Eachgroundwater model is unique and may require additionalprocedures in its development and application.All such addi-tional analyses should be documented,however,in the modelreport.1.5 This guide is one of a series of standards on groundwa-ter model applications.Other standards include D5981,D5490,D5609,D5610,D5611,and D6033.1.6 This standard does not purport to address all of thesafety concerns,if any,associated with its use.It is theresponsibility of the user of this standard to establish appro-priate safety,health,and environmental practices and deter-mine the applicability of regulatory limitations prior to use.1.7 This guide offers an organized collection of informationor a series of options and does not recommend a specificcourse of action.This document cannot replace education orexperience and should be used in conjunction with professionaljudgment.Not all aspects of this guide may be applicable in allcircumstances.This ASTM standard is not intended to repre-sent or replace the standard of care by which the adequacy ofa given professional service must be judged,nor should thisdocument be applied without consideration of a projects manyunique aspects.The word“Standard”in the title of thisdocument means only that the document has been approvedthrough the ASTM consensus process.1.8 This international standard was developed in accor-dance with internationally recognized principles on standard-ization established in the Decision on Principles for theDevelopment of International Standards,Guides and Recom-mendations issued by the World Trade Organization TechnicalBarriers to Trade(TBT)Committee.2.Referenced Documents2.1 ASTM Standards:2D653 Terminology Relating to Soil,Rock,and ContainedFluidsD5490 Guide for Comparing Groundwater Flow ModelSimulations to Site-Specific InformationD5609 Guide for Defining Boundary Conditions in Ground-water Flow ModelingD5610 Guide for Defining Initial Conditions in GroundwaterFlow ModelingD5611 Guide for Conducting a Sensitivity Analysis for aGroundwater Flow Model ApplicationD5981 Guide for Calibrating a Groundwater Flow ModelApplication(Withdrawn 2017)3D6033 Guide for Describing the Functionality of a Ground-water Modeling Code3.Terminology3.1 Definitions:1This guide is under the jurisdiction ofASTM Committee D18 on Soil and Rockand is the direct responsibility of Subcommittee D18.21 on Groundwater andVadose Zone Investigations.Current edition approved Dec.15,2017.Published January 2018.Originallyapproved in 1993.Last previous edition approved in 2010 as D544704(2010).DOI:10.1520/D5447-17.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual Book of ASTMStandards volume information,refer to the standards Document Summary page onthe ASTM website.3The last approved version of this historical standard is referenced onwww.astm.org.*A Summary of Changes section appears at the end of this standardCopyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United StatesThis international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for theDevelopment of International Standards,Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade(TBT)Committee.1 3.1.1 For common definitions of technical terms used in thisstandard,refer to Terminology D653.3.2 Definitions of Terms Specific to This Standard:3.